Transfer printing quantum light sources on silicon chips

What is it about?

Quantum dots are recognized as high-performance single-photon sources. However, efficient connection of their emission to integrated quantum photonics platforms has been an outstanding challenge. We show the design and fabrication of integrated quantum-dot single-photon sources on silicon photonic chips. Two-dimensional photonic crystal nanocavities based on GaAs were used for funneling the emission into silicon waveguides. The hybrid integration was precisely performed using transfer printing. We observed efficient generation and waveguiding of single photons on chip.

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